Means for molding hot-water bottles.



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MEANS FOR MQLDING HOTWATER BOTTLES.

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I l T n By Arns.

THOMAS M. GREGORY, OF AKRON, OHO.

MEANS FOR MOLDING HOT-WATERBOTTLES.

Specification offLetters Patent. Application filed January 2,0, 1908. Serial No. 411,802.

Patenteaoea r3, loose acitizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented `certain new and useful Improvements in Means for Moldin"` Hot- Water Bottles, and do declare that ille fol-f lowing is a full, clear, and exact description ofthe invention, which will enable others skilled in the art to which` it appertains to make and use the same.

My invention relates to means for moldin hot water bottles.

In the accompanying drawings, Sheet 1 illustrates my. invention in one form, and Sheet 2 is a modified form, and Figure 1,' Sheet-1, isa longitudinal section of the mold and 'core complete. Fig. 2 is a plan view of the lower section of the mold with the vcore members lying therein. Fig. 3 is --a cross section of the com lete mold witha'bag therein. Figs. 4 an `5 are views of details of the core. Fig. 6 is a cross section of the bottom-'mo1d member or section. Fig. 7 is a lone gitudinal section of a modification of the entire mold corresponding otherwise to Fig.v 1, and Fi 8 isa plan view of the bottom inember-of t e mold and a horizontal longitudinal section of the core pieces; Fig. 9 is a cross 30y section of Fig. 7 and Figs. 10 and 11 are details ofthe core `as w1ll hereinafter more clearly appear.`

The` idea of the invention as thus shown is to make a rubber bag or bottle from two sheets of suitably prepared rubber cut to the requisite shape to form a' com lete bag or bottle when brought together inthe mold and at their meeting edgps; The invention therefore contemplates t e use of two simi.- larsheets or halves-of-a complete bag ofv a suitable size, and various sizes ofbags can of coursebemade'in this way, and-said sheets or halves are indicated herein by 2 -and 3 re'- spectively.,` The mold members proper, Av

and B, are designed to .bring the said halves orfsheets of the bag to ether edge to edgeall around and to so con ne them in such con tact-at their edges that when the re uisite vulcanizing. heat, is applied to the mol s the said'edges willrun togetherand blend or unite as. one, so that the edges as suchwill disappear and a= unified bag without` a seam will be the product. To these ends, said member A has centering pins c in its top and corresponding holes or cavities are formed in member B to engage said pins therein andl bring said sections together in exactly the same relations at all times upon theirfmeeting surfaces. Said sections also have corresponding depressions inl their opposed. surfaces conforming exactly tothe out 'ne of the bottle to be formed, the relative depth ofl such depressions or recesses andtheshape and fashion thereof being` clearly shown 1n both sheets of the drawings and are ali-kein all essential particulars in both, excepting as to certain details which will hereinafter be more definitely referred to and which differentiate the parts in Figs. 7 to 11 from the form shown in Figs. 1 to 6.l

Now, as to the particulars of construction of the said core, vit isseen lto consist of three separate arts, the body O and thetwo sides 4 engage therewith as appears in Figs.y LtoV 6, and the body C and si es 5seenin Figs. 7. to 11. In both these forms the core Vbody `part is substantially cylindrical in cross section and has a head -6 between its ends conforming to the shape or contour of the funnel of the bag, and acentral bore 7- throu hv which a iuid of some suitable kind may e injected to distendthe sides orside pieces of the bag and keep them a art by mida-tion during the process of m0 The said core rests on the periphery of'head 6in thomolds while its tapered portion gives sha-pe to the funnel of the bag, and the necle'Sv to the neck of the bagin Vwhich the thimble of the iinished bag which holds the sto engaged. From this oint on thesai -cores C and C differ, as o also the spreading members-4 and 5. Thus, in Figs. 1 to 6.the inner ends of the spreader-s 4 are shown; as having al channelorgroove-Q in one end and a parallel open slot "l0-adapted to en einthe open slotted end of part (lin whic isacross pm 13 corresponding'. toeach-slot 10-V and which brings the outer ends of said s roaders 4 into deiini-tework-ing positionswi said ooves 9, forming a continuationofair-'oruid channel 7. At the opposite ends 4vthe said spreaders tare held inrlght workin nelations to each other and the mold mem rs. by abutting closely on\ their opposed facesf15 and bein otherwise centered and-held-lame.A

ally by lt e fingers 16 thereon projectin far enough outward to engage their reduc axe tremitiesfirmly togetheronthe bosslvl'f between the sido shoulders latherem,I said boss/being formed oni-the die member ArendI place.

As to the process of molding the body the same proceeds by first laying a sheet of the rubber in the bottom mold and then placing the body of the core with the spreaders over said sheet, the body of the core having side grooves 21 engaging side ins 20 and by which said body is centered) and held from rotation. In the irst form of the device the outer ends or projections 16 of the parts 4 are held deiinitely at a given elevation by boss 18 and from spreading laterally by projections 19. The next or upper sheet of rubber is then laid in position and the top section of the mold 1s placed thereon. The mold is now ready for the atmospheric or like iniation of the bag through channel 7 to keep the sides of the ba0r apart and for the heating necessary to melt the edges of the sheets into perfect fusion, as shown to be in Fig. 3. The bottle is now ready to be removed from the mold and the core from the bottle. As to this operation, all the core parts are removed through the mouth of the ottle, and this is made possible by reason of the sectional construction of the core and the sha e of the parts. Thus the body C is first wit idrawn and then the spreaders separated,

and one of said parts is taken out at a time. Obviously the pieces of the core are built with this mannerof removal in view. The bag is then ready for inserting the thimble (not shown) in the neck thereof and such slight inishing touches as it may require, but is finished as a bag in the manner described.

The same steps are taken in the molding and in the separation and removal of parts in the modification, Figs. 7 to 11, except that in this instance the s readers 5 have no-direct rest upon the moldp as in Figs. 1 to 6 but are carried and upheld exclusively by member C exceI t as they rest naturally on the rubber in the ies A and B. To this end member C has a stem cin the o posite sides ofwhich are longitudinal dovetai ed grooves c adapted to be engaged by corres ondingly shaped tenons d on the ends o spreaders 5. Hence when core C is withdrawn the stem c goes out with it, releasing it from the spreaders 5 which are thus freed and can be separately removed. This construction of' core does not leave a hole or opening of any kind in the bottom of the bottle and holds the spreaders 5 in right working relations at both ends in the mold. The said spreaders have submembers having end connections oppositely with said body at one end and with each other at the other end and adapted to occupy the outer portions of said cavities, said members being separately removable.

2. Means for molding rubber bottles comprising external mold members and a core consisting of separate internal parts com- )rising a body part having a longitudinal bore for the introduction of iluid and separate side arts operatively engaged therewith and sliaped to the sides of the bottle internally.

e3. In the manufacture of rubber bottles, a two part external mold, and parts to shape the bottle internally adapted to be confined in said external mold and consisting of a body having a central bore and a reduced annular projection corresponding to the neck of the bottle, and two separateside core mein bers curved lengthwise between their ends and separately interlocked with the said body at the inner extremity thereof.

4. In the manufacture of rubber bottles, a core therefor consisting of a substantially tubular body having a longitudinal bore for the introduction of i'luid and provided with a head adapted to mold the funnel ofthe bottle and a projection next beyond said head, and two corresponding spreading parts for the inside of the bottle separably engaged at opposite sides with said projection.

5. In themanufacture of' rubber water bottles, a set of outer mold members and inner members consisting of a main part having a central bore and a reduced projection at its inner end, a pair of spreading parts curved between their ends and interlocked with said projection, said spreading parts having slots to engage with said projection and said parts constructed to withdraw said main part bodily and leave said spreading parts in th'e bottle.

6. A mold for hollow rubber articles, such as water bottles, comprising three several core members consisting of a tubular body having a bore through its center to introduce air, and two curved side parts having corresponding ends engaged with the extremity of said body and their oiiosite ends together, and a two part mo d constructed to engage said opposite ends and hold them together.

7. A mold for rubber bottles comprising separable mold members, a substantially lOl constructed to mold the neck and flaring mouth of the bottle and having its inner end constructerbto interlock with saidl core members and to be Withdrawn independently 15 therefrom.

In testimony whereof I sign this specification in the presence of two Witnesses.

f THOMAS M. GREGORY. Witnesses:

R. B. MOSER, H. W. ROBERTS.' 

